In this image provided by the U.S. Marine Corps, then-Marine Corps Lt. Gen. Gary L. Thomas, deputy on Aug. 8, 2016. Thomas, now the assistant commandant of the Marine Corps, has tested positive for the coronavirus, days after he and members of the Joint Chiefs of Staff were in a Pentagon meeting with a Coast Guard leader who was infected with the virus. (Lance Cpl. Paul A. Ochoa/Marine Corps via AP)